CN2420955Y - Explosion-prevention device for pressure cooker - Google Patents

Abstract

The utility model relates to the technical field of a safety explosion-preventing device for pressure cookers, which is designed for the safe operation of the pressure cooker. The utility model comprises a valve core of a pressure limiting valve, wherein, the valve core of which forms threaded connection with the opening point of a cooker lid. The utility model is characterized in that one head of the valve core of a pressure limiting valve is provided with a pressure limiting end part, and the other head of the valve core of a pressure limiting forms threaded connection with an opening hole on the cooker lid by penetrating through an opening hole on a sealing cover cap; an air leakage pore canal is arranged on a threaded connection point of the cooker lid within the diameter range of the sealing cover cap or/and the valve core of a pressure limiting valve and the cooker lid, and sealing rubber rings are lined between the limiting end part of the valve core of a pressure limiting valve and the sealing cover cap and between the sealing cover cap and the cooker lid. The utility model has the advantages of simple structure, low cost and little possibility of malfunction, and the utility model is suitable for popularization and use on pressure cookers.

Description

Anti-exploding unit of pressure cooker

The utility model relates to the kitchen tools pressure cooker, especially safety anti-explosive device technique field on the pressure cooker.

Pressure cooker is to use one of kitchen tools in people's daily life; but quick-fried pot phenomenon usually can take place in improper use; harm people life and health; a lot of for this reason manufacturers set up many anti-explosion safety devices on pressure cooker; open security window as the pot cover edge; set up warning steam whistle valve on the pot cover again; various relief valves or the like; it is generally less that its shortcoming is that they let out steam vent road area; blocked by the assorted bits of food in the pot easily or become rusty and malfunctioning; and the valve body component parts is more complicated; influence production cost and manufacturing process; and generally the relief valve controlled pressure is that fixing limit is dead, can not regulate arbitrarily.

It is a kind of simple in structure that the purpose of this utility model is to provide, and disappointing duct is difficult for blocking or gets rusty and malfunctioning, the anti-exploding unit of pressure cooker that pot inner control pressure can to a certain degree can be regulated.

The technical solution of the utility model is to realize like this.This anti-exploding unit of pressure cooker includes valve core of pressure-limiting valve on the pressure cooker lid, valve core of pressure-limiting valve and pot cover tapping are for being threaded, it is characterized in that one of valve core of pressure-limiting valve has spacing end, the other end passes the closing cap perforate and above-mentioned pot cover perforate is threaded, pot cover in the closing cap diameter range or/and valve core of pressure-limiting valve and pot cover threaded connection place are shaped on disappointing duct, are lined with O-ring seal between the inner contact-making surface of spacing end of valve core of pressure-limiting valve and closing cap, closing cap and pot cover.

This anti-exploding unit of pressure cooker structure is very simple, closing cap and sealing ring have only been set up, low, the easy manufacturing of production cost is implemented, and it is very big to contact sealing surface between the spacing end of spool and the closing cap perforate, be difficult for being blocked or get rusty and block and make explosion-protection equipment malfunctioning, and just can regulate a pot inner control pressure size easily by rotary spool regulating spool fixing seal cover cap tense-lax by food debris.

Description of drawings:

Fig. 1. anti-exploding unit of pressure cooker structure cutaway view.

Below in conjunction with description of drawings embodiment of the present utility model is described in further detail:

Embodiment 1. as shown in the figure, pressure cooker lid 2 roughly the tip position perforate be fixed with valve core of pressure-limiting valve 1 by being threaded, the valve core of pressure-limiting valve lower end is spacing end 5, be the evagination annular, the valve core of pressure-limiting valve other end is passed closing cap 6 perforates and is described with above-mentioned pot cover and is threaded, be shaped on 1-2 centimeter length external screw thread 7 at threaded connection place valve core of pressure-limiting valve outer surface, and be milled with the disappointing duct 8 of 2-4 bar, on better being distributed on around the spool, pot cover in the closing cap diameter range also is shaped on a plurality of disappointing ducts so that step-down is disappointing fast simultaneously, and it is big that the closing cap cross section is

And and be lined with O-ring seal 4,3 between pressure limiting spool positive stop end portion and the inner contact-making surface of pot cover, more fortunately the spacing end of spool evagination annulus is shaped on cannelure and comes positioning and fixing O-ring seal 4, pot cover is shaped on cannelure and comes O-ring seal 3 between positioning and fixing pot cover and the closing cap, closing cap bottom surface opening diameter is at 2-4 centimetre, the bottom also has two and opens shrinkage pool, the bottom surface, spacing end of valve core of pressure-limiting valve is connected with Anti-stop cover, and valve core of pressure-limiting valve is having lock nut fastening with the pot cover threaded connection place.

Its operation principle is as follows: when the pot internal gas pressure surpasses a certain secure setting, the closing cap compressive deformation, air-flow backs down immediately that closing cap contact sealing surface with the spacing end of spool and by pot cover and the disappointing step-down in the disappointing duct of spool sidepiece in the pot, with packing pressure pot work safety, and can regulate valve core of pressure-limiting valve fixing seal cover cap tense-lax and come controlled pressure pressure limiting valve pot operating pressure.

Embodiment 2. pressure cooker lids are cancelled the cannelure of former location fixing seal cushion rubber, are embedded on the closing cap periphery and O-ring seal has annular groove, and all the other are as embodiment 1.

Claims (6)

1. anti-exploding unit of pressure cooker, it includes valve core of pressure-limiting valve on the pressure cooker lid (1), valve core of pressure-limiting valve and pot cover tapping are for being threaded, it is characterized in that one of valve core of pressure-limiting valve has spacing end (5), the other end passes closing cap (6) perforate and above-mentioned pot cover perforate is threaded, pot cover in the closing cap diameter range or/and valve core of pressure-limiting valve and pot cover threaded connection place are shaped on disappointing duct (8), be lined with O-ring seal (3,4) between the inner contact-making surface of spacing end of valve core of pressure-limiting valve and closing cap, closing cap and pot cover.

2. anti-exploding unit of pressure cooker as claimed in claim 1 is characterized in that the described valve core of pressure-limiting valve point valve core outer surface that is threaded with the pot cover perforate is shaped on 1-2 centimeter length external screw thread (7), and is milled with the 2-4 bar circumference uniform distribution duct (8) of losing heart.

3. anti-exploding unit of pressure cooker as claimed in claim 1 is characterized in that described O-ring seal can have annular groove and is embedded on the closing cap periphery in closing cap and pot cover contact-making surface place positioning and fixing for pot cover inside is shaped on cannelure or O-ring seal.

4. anti-exploding unit of pressure cooker as claimed in claim 1 is characterized in that the spacing end of described valve core of pressure-limiting valve is the evagination annular, is milled with cannelure on the evagination annulus and serves as a contrast O-ring seal (4).

5. anti-exploding unit of pressure cooker as claimed in claim 1 is characterized in that described closing cap shape cuts open The bottom surface opening diameter is at 2-4 centimetre, and the bottom also has two and opens shrinkage pool.

6. anti-exploding unit of pressure cooker as claimed in claim 1 is characterized in that the bottom surface, spacing end of described valve core of pressure-limiting valve is connected with Anti-stop cover.

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